(19)
(11) EP 2 680 027 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
11.03.2015 Bulletin 2015/11

(43) Date of publication A2:
01.01.2014 Bulletin 2014/01

(21) Application number: 13173847.8

(22) Date of filing: 26.06.2013
(51) International Patent Classification (IPC): 
G01S 7/40(2006.01)
 G01S 13/88(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 29.06.2012 US 201213537676

(71) Applicant: Rosemount Tank Radar AB
402 51 Göteborg (SE)

(72) Inventors:
  • Nilson, Leif
    583 36 Linköping (SE)
  • Nyberg, Håkan
    587 37 Linköping (SE)
  • Delin, Håkan
    585 93 Linköping (SE)

(74) Representative: Kransell & Wennborg KB 
P.O. Box 27834
115 93 Stockholm
115 93 Stockholm (SE)

   


(54) Pulsed level gauge system with temperature-based control of pulse repetition frequency


(57) The present invention relates to a method of controlling a pulsed radar level gauge system, comprising the steps of: acquiring a signal indicative of a present operating temperature; determining an initial frequency control parameter for control of at least one of transmission signal generating circuitry and reference signal generating circuitry based on the present operating temperature and a plurality of data sets each comprising data indicative of a previous operating temperature and a previously determined frequency control parameter for the previous operating temperature; and controlling, starting from the initial frequency control parameter, at least one of the transmission signal generating circuitry and the reference signal generating circuitry to achieve the known frequency difference between the first pulse repetition frequency and the second pulse repetition frequency at the present operating temperature.







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